Signaling device for use in case of fire or accident.



No. 798,466. 'PATENTED AUG. 29, 1905.

B. STOLL.

SIGNALING DEVICE FOR USE IN CASE OF FIRE OR ACCIDENT.

APPLICATION FILED APR.4.1905. v

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UNITED STATE$ PATIENT UFFIQIE.

EMIL STOLL, OF HANOVER, GERMANY.

SIGNALING DEVICE FOR USE IN CASE OF FIRE OR ACCIDENT.

Specification of Letters Patent.

Patented Aug. 29, 1905.

'l lpplioation filed April 4, 1905. Serial No. 253,898.

T0 all w/m/n/ it may con/007w.-

Be it known that I, EMIL S'roLL, a citizen of Germany, residing atHanover, Germ any, have invented certain new and useful Improvements inor Relating to Signaling Devices for Use in (Jase of Fire or Accident,of which the following is a specification.

In order to prevent the improper use of fire and accident signalingdevices, these devices or apparatus for calling up the central stationhave heretofore sometimes been arranged in a compartment so that themechanism of .the alarm apparatus could only be actuated after the doorof the compartment had been closed and locked. The person thusautomatically locked up in the compartment could then only leave itafter the door had been opened from the outside by a third party.

The object ofthis invention is to considerably simplify these apparatusby using a latch establishing, after the closing of the door of thecell, an electric contact which operates the signaling apparatus at thecentral station or releases the locking device of a calling-up apparatuscontained in the compartment or chamber.

A construction according to this invention is illustrated, by way ofexample, in the accompanying drawings, in which Figure 1 is a frontelevation of a signalstationembodying my invention; Fig. 2, a horizontalsection thereof, and Fig. 3 a detail of the signal-actuating mechanism.

The compartment or chamber .2 has, preferably, the shape of a column forposters and can be used as such for advertising purposes. It strikes theeye, therefore, and can be recognized from afar, more particularly ifthere be on the roof of the chamber or compartment some strikingindicator device adapted to be lighted at night.

The door ,0 of the compartment is opened by turning the handle 7), thespindle 7/ of which pushes back the latch q. After the door has thusbeen opened the person wishing to signal can enter the compartment. Thesignaling to the central station can, however, onlytake place after thedoor, controlled by close the circuit of the alarm, and at the same Itime the telephone 2'', Fig. 2, is made operative in the well-knownmanner. The person in the compartment can now talk to the centralstation and give the information desired. He cannot, however, leave thecompartment until he is released by an oflicial, who releases thespring-latch a by means of a key and opens the door.

The distance between the bolt q and the latch 16 is greater than thedistance between the keeper g of the bolt and the recess w. In this Waythe parts a '10 are out of alinement when the parts (1 q are inalinement, and vice versa. The consequence is that when the door isbolted the latch is open and that when the latch is closed the door isunbolted.

l/Vhat I claim is '1. In a signal apparatus, a chamber having a recess,an electric contact in the recess and a keeper, combined with a doorhaving a latch adapted to engage the recess and. close the contact, anda bolt adapted to engage the keeper, substantially as specified.

2. In a signal apparatus, a chamber having a recess, an electric contactin the recess and a keeper, combined with a door having a latch adaptedto engage the recess and close the contact, and a bolt adapted to engagethe keeper, all being so constructed that the distance between therecess and keeper is different from that between the latch and bolt,substantially as specified.

Signed by me at Hanover, Germany, this 22d day of March, 1905.

EMIL STOLL.

Witnesses:

H. HAvsnN. LEONORE RAsoir.

